To reproduce:
 Sub New()
     InitializeComponent()

     Dim colors() As Color = {Color.LightBlue, Color.LightGreen, Color.LightYellow, Color.Red, Color.Orange}

     Dim names() As String = {"Alan Smith", "Anne Dodsworth", "Boyan Mastoni", "Richard Duncan", "Maria Shnaider"}

     For i As Integer = 0 To names.Length - 1
         Dim resource As New Telerik.WinControls.UI.Resource()
         resource.Id = New EventId(i)
         resource.Name = names(i)
         resource.Color = colors(i)
         Me.RadScheduler1.Resources.Add(resource)
     Next i
     Me.RadScheduler1.GroupType = GroupType.Resource
     Me.RadScheduler1.ActiveView.ResourcesPerView = 2

     Dim rand As New Random

     For index = 1 To 20
         Dim appointment As New Appointment(Date.Now.AddHours(index), TimeSpan.FromMinutes(30), "Summary", "Description")
         appointment.StatusId = RadScheduler1.Statuses(rand.Next(0, RadScheduler1.Statuses.Count)).Id
         appointment.BackgroundId = RadScheduler1.Backgrounds(rand.Next(0, RadScheduler1.Backgrounds.Count)).Id
         appointment.ResourceId = RadScheduler1.Resources(rand.Next(0, RadScheduler1.Resources.Count)).Id
         Me.RadScheduler1.Appointments.Add(appointment)
     Next
     RadSchedulerLocalizationProvider.CurrentProvider = New CustomSchedulerLocalizationProviderInglese()
 End Sub

 Public Class CustomSchedulerLocalizationProviderInglese
     Inherits RadSchedulerLocalizationProvider
     Public Overrides Function GetLocalizedString(id As String) As String
         
         Return MyBase.GetLocalizedString(id)

     End Function
 End Class

The AppointmentResizeEnd event fires in cases where there was no resize done (for example when selecting appointments)

To workaround:

public Form1()
{
    InitializeComponent();
    this.radScheduler1.SchedulerElement.ResizeBehavior = new MyResizeBehavior(this.radScheduler1);
}
 
class MyResizeBehavior : AppointmentResizingBehavior
{
    public MyResizeBehavior(RadScheduler scheduler)
        :base(scheduler) { }
 
    public override bool EndResize(IEvent appointment)
    {
        if (!this.IsResizing)
        {
            return false;
        }
        return base.EndResize(appointment);
    }
}

To reproduce:
- Open an appointment with the open item button from the alarm form.
- Change the appointment start time and close it. 
- The "Due in' column in the grid is not properly updated.

To reproduce:
1. Add a RadSheduler with one Appointment with more than one resources (e.g. add two EventIds in its  ResourceIds collection).
2.Group the scheduler by resources setting the GroupType property to GroupType.Resource.
3.Use SchedulerViewType.Timeline.

When you try to resize the appointment for one of the resources, the expected result is this appointment to be resized for all of its resources.

Workaround: Use the AppointmentMouseUp event and manually perform the refresh:

Private Sub sched_AppointmentMouseUp(sender As Object, e As SchedulerAppointmentMouseEventArgs)
    If e.Button = Windows.Forms.MouseButtons.Left Then
        Me.sched.SchedulerElement.Refresh()
    End If
End Sub

To reproduce:
public Form1()
{
    InitializeComponent();
    List<string> resources = new List<string>();
    for (int index = 1; index <= 30; index++)
    {
        resources.Add("Resource" + index);
    }

    for (int i = 0; i <= resources.Count - 1; i++)
    {
        Resource resource = new Resource();
        resource.Id = new EventId(i);
        resource.Name = resources[i];
        this.RadSchedulerDemo.Resources.Add(resource);
    }

    this.RadSchedulerDemo.GroupType = GroupType.Resource;
    Appointment appointment = null;
    this.RadSchedulerDemo.ActiveViewType = SchedulerViewType.Timeline;
    TimelineGroupingByResourcesElement headerElement = this.RadSchedulerDemo.SchedulerElement.ViewElement as TimelineGroupingByResourcesElement;
    headerElement.ResourceHeaderWidth = 150;
    Random rand = new Random();

    for (int i = 0; i <= 99; i++)
    {
        appointment = new Appointment(DateTime.Now.AddHours(i), new TimeSpan(30), "Summary" + i, "Description" + i, "location" + i);
        appointment.ResourceId = this.RadSchedulerDemo.Resources[rand.Next(0, this.RadSchedulerDemo.Resources.Count)].Id;
        appointment.BackgroundId = Convert.ToInt32(this.RadSchedulerDemo.Backgrounds[rand.Next(0, this.RadSchedulerDemo.Backgrounds.Count)].Id);
        this.RadSchedulerDemo.Appointments.Add(appointment);
    }

    this.RadSchedulerDemo.GetTimelineView().ShowTimescale(Timescales.Hours);
    SchedulerTimescale timescale1 = this.RadSchedulerDemo.GetTimelineView().GetScaling();
    timescale1.DisplayedCellsCount = 30;
    this.RadSchedulerDemo.ActiveView.ResourcesPerView = 10;
}

Try to scroll to the last resource when you ResourcesPerView =2 and when ResourcesPerView =10. You will notice considerable difference in scrolling speed.

To reproduce:
- Add RadScheduler to a blank form.
- Set its AllowAppointmentResize property to false.
- You will notice that the resize squares are not removed from the selected appointment.

To reproduce:


Add a scheduler to a Form. Subscribe to the PropertyChanged of the active view:


this.scheduler.ActiveView.PropertyChanged += ActiveView_PropertyChanged;


Set the scheduler's ActiveViewType to Week and then Day, this will cause the StartDate to change. 


this.scheduler.ActiveViewType = SchedulerViewType.Week;
this.scheduler.ActiveViewType = SchedulerViewType.Day;


void ActiveView_PropertyChanged(object sender, PropertyChangedEventArgs e)
{
    if (e.PropertyName == "StartDate")
    {
        Console.WriteLine(this.scheduler.ActiveView.GetType()); // results in WeekView
        Debugger.Break();
    }
}


You will notice that even that the ActiveView is WeekView the StartDate is changed when setting the ActiveViewType to Day. The PropertyChanged event for StartDate should be fired for the appropriate new ViewType.

To reproduce:


Set the following property:
this.scheduler.SchedulerElement.EditorManager.EditorViewMode = SchedulerEditorViewMode.EditorDialog;


After that when editing an appointment a small dialog should appear on the side of the appointment.


You will notice that it is very hard to make the dialog appear and it is not very clear at what conditions.


Workaround:


Show the dialog whenever you need it. For example, when an appointment is clicked:


this.scheduler.SchedulerElement.EditorManager.EditorViewMode = SchedulerEditorViewMode.EditorDialog;


this.scheduler.MouseClick += scheduler_MouseClick;


void scheduler_MouseClick(object sender, MouseEventArgs e)
{
    if (this.scheduler.ElementTree.GetElementAtPoint(e.Location) as AppointmentElement != null)
    {
        this.scheduler.SchedulerElement.EditorManager.BeginEdit();
    }
}

To reproduce:
1. Have a scheduler grouped by resource 
2. On a button click call its PrintPreview method
3. Open the print settings dialog
4. Select Weekly Style
5. Select Grouped by: Resource
6. Select Two pages per week 
at this point, exception is thrown

Workaround:
  protected override void OnLoad(EventArgs e)
        {
            base.OnLoad(e);
            AddScheduler();

            radScheduler1.PrintSettingsDialogFactory = new MyFactory();
        }

        private void radButton1_Click(object sender, EventArgs e)
        {
            radScheduler1.PrintPreview();
        }

        class MySchedulerPrintSettingsDialogFactory : SchedulerPrintSettingsDialog
        {
            SchedulerPrintStyleSettings userControl;
            RadDropDownList groupBy;
            RadDropDownList twoPagesPerView;
            RadDropDownList printStyle;

            public MySchedulerPrintSettingsDialogFactory(RadPrintDocument document)
                : base(document)  { }

            protected override Control CreateFormatControl()
            {
                userControl = base.CreateFormatControl() as SchedulerPrintStyleSettings;
                RadGroupBox groupBox = userControl.Controls["groupBoxStyleSettings"] as RadGroupBox;

                groupBy = groupBox.Controls["dropDownGroupBy"] as RadDropDownList;
                groupBy.SelectedIndexChanged += groupBy_SelectedIndexChanged;

                twoPagesPerView = groupBox.Controls["dropDownLayout"] as RadDropDownList;
                twoPagesPerView.SelectedIndexChanging += twoPagesPerView_SelectedIndexChanging;

                RadGroupBox groupBoxMain = userControl.Controls["groupBoxPrintStyle"] as RadGroupBox;
                printStyle = groupBoxMain.Controls["dropDownPrintStyle"] as RadDropDownList;
                printStyle.SelectedValueChanged += printStyle_SelectedValueChanged;
                return userControl;
            }

            void printStyle_SelectedValueChanged(object sender, EventArgs e)
            {
                if (printStyle.SelectedItem.Text == "Weekly Style")
                {
                    twoPagesPerView.SelectedItem = twoPagesPerView.Items[0];
                }
            }

            void twoPagesPerView_SelectedIndexChanging(object sender, Telerik.WinControls.UI.Data.PositionChangingCancelEventArgs e)
            {
                if (groupBy.SelectedItem.Text == "Resource" && e.Position == 1)
                {
                    e.Cancel = true;
                    RadMessageBox.Show("Two pages per view is not supported in GroupBy:Resource mode");
                }
            }

            void groupBy_SelectedIndexChanged(object sender, Telerik.WinControls.UI.Data.PositionChangedEventArgs e)
            {
                if (groupBy.Items[e.Position].Text == "Resource")
                {
                    twoPagesPerView.SelectedItem = twoPagesPerView.Items[0];
                }
            }
        }

        class MyFactory : IPrintSettingsDialogFactory
        {
            public Form CreateDialog(RadPrintDocument document)
            {
                return new MySchedulerPrintSettingsDialogFactory(document);
            }
        }

To reproduce:

Add a Resource to RadScheduler:

Resource res = new Resource();
res.Id = new EventId(199);
res.Name = "John Doe";

radScheduler1.Resources.Add(res);

Create a new appointment and set the resource:

Appointment app = new Appointment();

app.Start = DateTime.Now;
app.End = app.Start.AddHours(1);
app.BackgroundId = 3;
app.ResourceId = new EventId(199);

radScheduler1.Appointments.Add(app);

Subscribe to the CollectionChangedEvent:
void Appointments_CollectionChanged(object sender, Telerik.WinControls.Data.NotifyCollectionChangedEventArgs e)
{
    if (e.Action == Telerik.WinControls.Data.NotifyCollectionChangedAction.ItemChanged)
    {
        Debug.WriteLine("Property Changed = " + e.PropertyName);
    }
}

Run the application, open the appointment and click ok. You will notice that the event will fire. It should not fire since the EventId is the same.

Workaround:
Create a custom appointment following this article: http://www.telerik.com/help/winforms/scheduler-appointments-and-dialogs-adding-a-custom-field-to-the-editappointment-dialog.html and override the ResourceId property:

public class App : Appointment
{
    public override EventId ResourceId
    {
        get
        {
            return base.ResourceId;
        }
        set
        {
            if (!Object.Equals(this.ResourceId, value))
            {
                base.ResourceId = value;
            }
        }
    }
}

1. In Day View, add an appointment for Thursday Jan 30
3. Click the Print Preview button
4. Click on the Print Settings dialog
5. Now change the Print style to Weekly.
Note that the DateRange now changes to Jan 27 - Feb 2. 
6. Now change the Print style to Monthly.
Note that the DateRange now changes to Jan 26 - Feb 2, whereas it should be Jan 26 to Feb 2, since the default week count is 4

To reproduce:
1. Create a new Form
2. Add a Scheduler control and set Dock to Dock.Fill
3. Run the form
4. Add an appointment to the scheduler
5. Right-click the newly added appointment and start dragging it to move the appointment
6. Let go of the mouse button to drop

You will notice that the appointment will not be dropped and the context menu will show. 

A correct behavior should be chosen.

Workaround:

Stop the appointments from dragging with right-mouse:

MouseButtons lastButton;
void scheduler_MouseDown(object sender, MouseEventArgs e)
{
    this.lastButton = e.Button;
}

void DragDropBehavior_Starting(object sender, RadServiceStartingEventArgs e)
{
    e.Cancel = lastButton == System.Windows.Forms.MouseButtons.Right;
}

To reproduce:
Subscribe for the ContextMenuShowing event of RadScheduler and use the following code:
private void radScheduler1_ContextMenuShowing(object sender, SchedulerContextMenuShowingEventArgs e)
{
   e.ContextMenu.Items.Clear();
   e.ContextMenu.Items.Add(new RadMenuItem("Item"));
}

Right-Click on two appointments and you will notice the exception

Workaround:
Add three invisible items:
private void radScheduler1_ContextMenuShowing(object sender, SchedulerContextMenuShowingEventArgs e)
{
   e.ContextMenu.Items.Clear();
   e.ContextMenu.Items.Add(new RadMenuItem("Item"));
   for (int i = 0; i < 3; i++)
   {
       e.ContextMenu.Items.Add(new RadMenuItem() { Visibility = ElementVisibility.Collapsed });
   }
}

To reproduce:
- add RadScheduler with several appointments and use the folllowing code:
SchedulerDayView dayView = this.radScheduler1.GetDayView();
dayView.RangeFactor = ScaleRange.QuarterHour;
dayView.RulerStartScale = 7;
dayView.RulerEndScale = 18;

Ensure that you have appointments with start before 7 AM and appointments with start after 18 PM. All appointments with start before 7 AM are displayed at the top of the view, but all appointments with start after 18 PM are not displayed.

Workaround:
public Form1()
{
    InitializeComponent();

    for (int i = 0; i < 20; i++)
    {
        Appointment appointment = new Appointment(DateTime.Now.AddHours(12 + i), TimeSpan.FromMinutes(30), "Summary", "Description");
        appointment.StatusId = 2;
        appointment.BackgroundId = 6;
        this.radScheduler1.Appointments.Add(appointment);
    }

    SchedulerDayView dayView = this.radScheduler1.GetDayView();
    dayView.RangeFactor = ScaleRange.QuarterHour;
    dayView.RulerStartScale = 7;
    dayView.RulerEndScale = 18;

    this.radScheduler1.AppointmentElementFactory = new CustomAppointmentElementFactory();
}

public class CustomAppointmentElementFactory : IAppointmentElementFactory
{
    AppointmentElement IAppointmentElementFactory.CreateAppointmentElement(RadScheduler scheduler, SchedulerView view, IEvent appointment)
    {
        return new CustomAppointmentElement(scheduler, view, appointment);
    }
}

public class CustomAppointmentElement : AppointmentElement
{
    public CustomAppointmentElement(RadScheduler scheduler, SchedulerView view, IEvent appointment) : base(scheduler, view, appointment)
    {
    }

    protected override void OnParentChanged(Telerik.WinControls.RadElement previousParent)
    {
        base.OnParentChanged(previousParent);

        if (this.Scheduler.ActiveViewType == SchedulerViewType.Day)
        {
            if (this.Start.Hour > this.Scheduler.GetDayView().RulerEndScale)
            {
                this.Start = this.Start.Date.AddHours(this.Scheduler.GetDayView().RulerEndScale).AddMinutes(-(int)this.Scheduler.GetDayView().RangeFactor);
            }
        }
    }
}

Description:
When the appointment is moved (dragged and dropped) from one resource to another resource in Timeline view only, the AppointmentDropped event is not fired. This results in NullReferenceException in Windows 8.

To reproduce:
- add RadScheduler in Timeline view and use the following code:

List<Appointment> appointmentlist = new List<Appointment>();

public Form1()
{
InitializeComponent();

this.radScheduler1.Resources.Add(new Resource { Id = new EventId("1"), Name = "Jack", Visible = true });
this.radScheduler1.Resources.Add(new Resource { Id = new EventId("2"), Name = "John", Visible = true });
this.radScheduler1.Resources.Add(new Resource { Id = new EventId("3"), Name = "John", Visible = true });

this.radScheduler1.GroupType = GroupType.Resource;
this.radScheduler1.GetDayView().DayCount = 1;

Random rand = new Random();
for (int i = 0; i < 20; i++)
{
Appointment appointment = new Appointment(DateTime.Now, TimeSpan.FromMinutes(30), "Summary", "Description");
appointment.StatusId = rand.Next(1, radScheduler1.Statuses.Count);
appointment.BackgroundId = rand.Next(1, radScheduler1.Backgrounds.Count);
appointment.ResourceId = radScheduler1.Resources[rand.Next(0, radScheduler1.Resources.Count)].Id;
appointmentlist.Add(appointment);
}

this.radScheduler1.Appointments.BeginUpdate();
this.radScheduler1.Appointments.AddRange(this.appointmentlist.ToArray());
this.radScheduler1.Appointments.EndUpdate();
this.radScheduler1.AppointmentDropped += radScheduler1_AppointmentDropped;
}

private void radScheduler1_AppointmentDropped(object sender, AppointmentMovedEventArgs e)
{
MessageBox.Show("Dropped");
}

Workaround: use custom DragDropBehavior as follows:
this.radScheduler1.SchedulerElement.DragDropBehavior = new CustomDragDrop(this.radScheduler1.SchedulerElement);


public class CustomDragDrop : AppointmentDraggingBehavior
{
public CustomDragDrop(SchedulerVisualElement activeOwner) : base(activeOwner)
{
}

public override void Drop()
{
DateTime start = this.ActiveFeedback.Scheduler.SystemTimeZone.OffsetTime(this.ActiveFeedback.Appointment.Start, this.ActiveFeedback.View.DefaultTimeZone);
DateTime end = this.ActiveFeedback.Scheduler.SystemTimeZone.OffsetTime(this.ActiveFeedback.Appointment.End, this.ActiveFeedback.View.DefaultTimeZone);

IEvent ev = this.ActiveFeedback.AssociatedAppointment;
bool changeResourceId = (this.Scheduler.GroupType == GroupType.Resource) &&
(this.ActiveFeedback.Appointment.ResourceId != this.ActiveFeedback.AssociatedAppointment.ResourceId ||
this.ActiveFeedback.Appointment.ResourceIds.Count != this.ActiveFeedback.AssociatedAppointment.ResourceIds.Count);

AppointmentMovingEventArgs cancelArgs = (this.Scheduler.GroupType != GroupType.Resource) ? new AppointmentMovingEventArgs(start, ev) :
new AppointmentMovingEventArgs(start, ev, this.ActiveFeedback.Appointment.ResourceId);

this.OnAppointmentDropping(cancelArgs);

this.ActiveOwner.Scheduler.GetType().GetMethod("OnAppointmentDropping", BindingFlags.NonPublic |
BindingFlags.Instance).Invoke(this.ActiveOwner.Scheduler, new object[] { cancelArgs });

if (cancelArgs.Cancel)
{
this.Stop(false);
return;
}

this.ActiveFeedback.Scheduler.Appointments.BeginUpdate();

if (this.ActiveOwner as DayViewAllDayHeader != null && this.ActiveFeedback.Appointment.Duration < new TimeSpan(1, 0, 0, 0))
{
start = this.ActiveFeedback.Appointment.Start.Date;
end = DateHelper.GetEndOfDay(this.ActiveFeedback.Appointment.End);

start = this.ActiveFeedback.Scheduler.SystemTimeZone.OffsetTime(start, this.ActiveFeedback.View.DefaultTimeZone);
end = this.ActiveFeedback.Scheduler.SystemTimeZone.OffsetTime(end, this.ActiveFeedback.View.DefaultTimeZone);
}

this.ActiveFeedback.AssociatedAppointment.Start = start;
this.ActiveFeedback.AssociatedAppointment.End = end;

if (changeResourceId)
{
this.ActiveFeedback.AssociatedAppointment.ResourceId = this.ActiveFeedback.Appointment.ResourceId;
}

RadScheduler scheduler = this.ActiveOwner.Scheduler;
if (scheduler.DataSource != null)
{
scheduler.DataSource.GetEventProvider().Update(this.ActiveFeedback.AssociatedAppointment, "Start");
scheduler.DataSource.GetEventProvider().Update(this.ActiveFeedback.AssociatedAppointment, "End");
scheduler.DataSource.GetEventProvider().Update(this.ActiveFeedback.AssociatedAppointment, "Duration");
if (changeResourceId)
{
scheduler.DataSource.GetEventProvider().Update(this.ActiveFeedback.AssociatedAppointment, "ResourceId");
scheduler.DataSource.GetEventProvider().Update(this.ActiveFeedback.AssociatedAppointment, "ResourceIds");
}
}

while (!this.ActiveFeedback.Scheduler.Appointments.IsUpdated)
this.ActiveFeedback.Scheduler.Appointments.EndUpdate(true);

AppointmentMovedEventArgs args = (this.Scheduler.GroupType != GroupType.Resource) ? new AppointmentMovedEventArgs(start, ev) :
new AppointmentMovedEventArgs(start, ev, this.ActiveFeedback.Appointment.ResourceId);

this.HideFeedbacks();
SchedulerUIHelper.SelectAppointment(this.Scheduler, ev, true, false);

this.OnAppointmentDropped(args);
this.ActiveOwner.Scheduler.GetType().GetMethod("OnAppointmentDropped", BindingFlags.NonPublic |
BindingFlags.Instance).Invoke(this.ActiveOwner.Scheduler, new object[] { args });
}
}

To reproduce:
Add a RadScheduler with a database with appointments. In the recurrence rule of the appointments add the keyword FREQ with value MONTHLY- FREQ=MONTHLY;UNTIL=20140102T235959Z;BYDAY=TH;WKST=SU

You will notice that despite that the frequency of the recurrence is weekly.

To reproduce:
Add a RadScheduler and a database with appointments. Set the recurrence rule to the following:
FREQ=WEEKLY;UNTIL=20140102;BYDAY=TH;WKST=SU

A first chance exception will be thrown and the appointments will not show correctly.

Workaround:
Before setting the recurrence rule make sure that the UNTIL keyword's value is in the following format: 20140102T235959Z or more specifically - yyyyMMdd\\THHmmss\\Z

To reproduce:
Create a SQL table as per this article - http://www.telerik.com/help/winforms/scheduler-data-binding-using-datasource-property.html . Add the following mappings using EntityFramework or OpenAccess - http://www.telerik.com/help/winforms/scheduler-data-binding-using-datasource-property.html. You will notice that the resources cannot be mapped.
Workaround:
Implement a One-to-Many relation by adding a ResourceId column in the database and removing the old table.

Resolution: Both EF and TDA mappings work. Due to the differences in the mechanisms of the two products there are some slight adjustments that need to be made. Below is how to set up the mappings with EF and in commented code for ORM.
SchedulerDataEntities1 entityContext = new SchedulerDataEntities1();

To reproduce:
Add an appointment with the text "<html><size=9>Erin Swardz</br><color=Red>PO 2315</html>" the appointment looks formatted in the scheduler, however when in PrintPreview/Print the html code is printed in raw format

Workaround:
Strip all html in order to print pure text - 
void scheduler_AppointmentPrintElementFormatting(object sender, PrintAppointmentEventArgs e)
{
    string replaceBr = e.AppointmentElement.Text.Replace("</br>", " ");
    string result = Regex.Replace(replaceBr, @"<[^>]*>", string.Empty);
    e.AppointmentElement.Text = result;
}

To reproduce: 
Add a RadScheduler to a form and try the following method : 
private void Scroll() 
 { 
     SchedulerDayView dayView = radScheduler1.GetDayView(); 
     SchedulerWeekView weekView = radScheduler1.GetWeekView(); 
     dayView.RulerStartScale = 7; dayView.RulerEndScale = 22; 
     if (radScheduler1.ActiveViewType == SchedulerViewType.Day) 
       { 
          if (dayView != null) 
             { 
                dayView.RangeFactor = ScaleRange.QuarterHour; 
             } 
       } 
       else  if (radScheduler1.ActiveViewType == SchedulerViewType.Week) 
       {
         if (weekView != null) 
             { weekView.RangeFactor = ScaleRange.QuarterHour; 
             } 
       } 

dayView.RulerTimeFormat = RulerTimeFormat.hours24; 
SchedulerDayViewElement dayViewElement = this.radScheduler1.SchedulerElement.ViewElement as SchedulerDayViewElement; 
if (dayViewElement != null)
 { 
      dayViewElement.DataAreaElement.Table.ScrollToTime(new TimeSpan(DateTime.Now.Hour, 0, 0)); 
  } 
} 

As you can see the scroll is not correct.